Prefabricated assembled close-packed sheet pile revetment and construction method thereof

Abstract

The present invention discloses a prefabricated and assembled close-spaced sheet pile revetment, comprising: a plurality of prefabricated sheet piles driven side by side at the river bank, a plurality of first steel bars arranged at intervals are pre-buried at the top of the backwater side of each prefabricated sheet pile; a prefabricated guide beam pressed on the top surface of the plurality of prefabricated sheet piles, a plurality of second steel bars are pre-buried at intervals along the length direction on the backwater side of the prefabricated guide beam; and a sheet pile backwater side concrete structure cast on the upper part of the backwater side of the plurality of prefabricated sheet piles and covering the plurality of first steel bars on each prefabricated sheet pile and the plurality of second steel bars on the prefabricated guide beam. A construction method of the above-mentioned prefabricated and assembled close-spaced sheet pile revetment is also disclosed. The present invention has the advantages of simple and quick construction, investment saving, low environmental pollution, and short construction period.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a prefabricated assembled close-spaced sheet pile revetment and a construction method thereof. Background Art

[0002] Close-packed sheet pile revetment is a common revetment structure used in small and medium-sized river regulation. It has the advantages of good structural stability, strong erosion resistance, uniform river bank edge, good landscape effect, fast construction speed, no need for cofferdam construction, and small land occupation. The conventional construction method of close-packed sheet pile revetment is: see Figure 1 and Figure 2 First, drive in the precast sheet piles 10, and after chiseling off the pile heads of the precast sheet piles 10, a reinforced concrete guide beam 20 is cast on the top of the precast sheet piles 10. The main function of the reinforced concrete guide beam 20 is to connect the densely packed sheet piles into a whole and enhance the overall stability of the bank protection structure. Generally, a settlement joint is required every 10m to 15m.

[0003] During the construction of the traditional close-packed sheet pile revetment structure, it is generally necessary to chisel away the concrete with a thickness of 300 mm to 400 mm at the top of the pile, set up a temporary support on the water, and cast the reinforced concrete guide beam 20 after setting up the formwork on the top of the pile. The cost of setting up the temporary support is high, and the casting of the concrete of the guide beam on the top of the pile is easy to cause water pollution.

[0004] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Summary of the invention

[0005] One of the technical problems to be solved by the present invention is to provide a prefabricated and assembled close-packed sheet pile revetment which is simple and fast to construct, saves investment and has little environmental pollution in view of the deficiencies of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a construction method for the above-mentioned prefabricated and assembled close-packed sheet pile revetment.

[0007] As a first aspect of the present invention, a prefabricated assembled close-packed sheet pile revetment comprises:

[0008] A plurality of prefabricated sheet piles are arranged side by side on the river bank, and a plurality of first steel bars arranged at intervals are embedded at the top of the backwater side of each prefabricated sheet pile;

[0009] A prefabricated guide beam is pressed on the top surface of the plurality of prefabricated sheet piles, and a plurality of second steel bars are pre-embedded at intervals along the length direction on the water-receiving side of the prefabricated guide beam; and

[0010] A sheet pile backwater side concrete structure is cast on the upper part of the backwater side of the plurality of precast sheet piles and covers a plurality of first steel bars on each precast sheet pile and a plurality of second steel bars on the precast guide beam.

[0011] In a preferred embodiment of the present invention, a protrusion extending in the height direction is formed on one side surface along the length direction of each prefabricated sheet pile, and a groove extending in the height direction is formed on the other side surface along the length direction; when two adjacent prefabricated sheet piles are matched, the protrusion of one prefabricated sheet pile is inserted into the groove of the other prefabricated sheet pile.

[0012] In a preferred embodiment of the present invention, the lower end of each prefabricated sheet pile is in a pointed cone structure.

[0013] In a preferred embodiment of the present invention, the cross section of the prefabricated guide beam is rectangular and its length is 10m to 15m.

[0014] In a preferred embodiment of the present invention, the top surface of the sheet pile backwater side concrete structure is flush with the top surface of the prefabricated guide beam.

[0015] In a preferred embodiment of the present invention, it further comprises a pedestrian walkway structure constructed at the backwater side of the sheet pile backwater side concrete structure, wherein the top surface of the pedestrian walkway structure is flush with the top surface of the sheet pile backwater side concrete structure.

[0016] In a preferred embodiment of the present invention, a resting step is formed on the backwater side of the sheet pile backwater side concrete structure, and the waterside edge of the pedestrian walkway structure rests on the resting step of the sheet pile backwater side concrete structure.

[0017] As a second aspect of the present invention, a construction method of the above-mentioned prefabricated assembled close-packed sheet pile revetment comprises the following steps:

[0018] Step S10, preparing a plurality of prefabricated sheet piles, and pre-reserving a plurality of first steel bars arranged at intervals at the top of the backwater side of each prefabricated sheet pile; preparing a prefabricated guide beam, and pre-embedding a plurality of second steel bars at intervals along the length direction on the backwater side of the prefabricated guide beam;

[0019] Step S20, driving the plurality of prefabricated sheet piles side by side at the river bank, with the plurality of first steel bars on each prefabricated sheet pile exposed above the ground;

[0020] Step S30, pressing the prefabricated guide beam onto the top surface of the plurality of prefabricated sheet piles;

[0021] Step S40, using conventional onshore construction technology to cast concrete on site on the upper part of the backwater side of the plurality of precast sheet piles to form a sheet pile backwater side concrete structure that covers the plurality of first steel bars on each precast sheet pile and the plurality of second steel bars on the precast guide beam.

[0022] In a preferred embodiment of the present invention, in the step S40, after additional steel bars are tied between the plurality of second steel bars on the precast guide beam and the plurality of first steel bars on each precast sheet pile, concrete is poured on site.

[0023] In a preferred embodiment of the present invention, the present invention further comprises step S50 of constructing a pedestrian walkway structure at the backwater side of the sheet pile backwater side concrete structure.

[0024] Due to the adoption of the above technical scheme, the beneficial effects of the present invention are: the present invention has the advantages of simple and fast construction, saving investment, less environmental pollution, and short construction period. It can avoid setting up scaffolds on water, thereby reducing the impact of construction on water bodies, and greatly reduce the use of templates. Conventional land construction technology can be used to complete the construction, thereby improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the cross-sectional structure of the traditional close-packed sheet pile revetment.

[0027] Figure 2 It is a schematic diagram of the connection of prefabricated sheet piles for traditional close-packed sheet pile revetment.

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the prefabricated and assembled close-packed sheet pile revetment (without a walkway) of the present invention.

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the prefabricated and assembled close-packed sheet pile revetment (without a walkway) of the present invention.

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the prefabricated sheet pile of the present invention.

[0031] Figure 6 1 is a top view of the prefabricated sheet pile of the present invention.

[0032] Figure 7 It is a longitudinal cross-sectional view of the prefabricated sheet pile of the present invention.

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the prefabricated guide beam of the present invention.

[0034] Fig. 9 1 is a top view of the prefabricated guide beam of the present invention.

[0035] Fig.10 It is a longitudinal sectional view of the prefabricated guide beam of the present invention.

[0036] Fig.11 It is a schematic diagram of the assembly of several prefabricated sheet piles of the present invention.

[0037] Fig.12 It is a schematic diagram of the assembly between a plurality of prefabricated sheet piles and a prefabricated guide beam of the present invention.

[0038] Fig.13 It is a schematic diagram of the cross-sectional structure of the prefabricated assembled close-packed sheet pile revetment (with a walkway) of the present invention.

[0039] Fig.14 It is a three-dimensional structural schematic diagram of the prefabricated and assembled close-packed sheet pile revetment (with a walkway) of the present invention. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams. Example

[0041] See also Figure 3 and Figure 4 , the figure shows a prefabricated assembled close-packed sheet pile revetment (without a walkway), including a number of prefabricated sheet piles 100, a prefabricated guide beam 200 and a sheet pile backwater side concrete structure 300.

[0042] See also Figures 5 to 7 Combined with Fig.11 , several prefabricated sheet piles 100 are driven side by side at the river bank, and several first steel bars 110 arranged at intervals are pre-buried at the top of the backwater side of each prefabricated sheet pile 100. A protrusion 120 extending in the height direction is formed on one side of each prefabricated sheet pile along the length direction, and a groove 130 extending in the height direction is formed on the other side of the prefabricated sheet pile along the length direction. When two adjacent prefabricated sheet piles 100 are matched, the protrusion 120 of one prefabricated sheet pile 100 is inserted into the groove 130 of the other prefabricated sheet pile 100, so that the two adjacent prefabricated sheet piles 100 are positioned. The lower end 140 of each prefabricated sheet pile 100 is a pointed cone structure, which is convenient for driving in the river bank foundation.

[0043] See also Figures 8 to 10 Combined with Fig.12The prefabricated guide beam 200 is pressed on the top surface of the prefabricated sheet piles 100, and a plurality of second steel bars 210 are pre-buried at intervals along the length direction on the water-receiving side of the prefabricated guide beam 200. The cross section of the prefabricated guide beam 200 is rectangular, and its length is 10m to 15m. During construction, the prefabricated guide beam 200 is pressed on the top surface of the prefabricated sheet piles 100, and its main function is to cover the unevenness of the outer side of the prefabricated sheet piles 100, so that the river bank is neat and uniform, and the landscape and hydrophilic effect are enhanced.

[0044] The sheet pile backwater side concrete structure 300 is cast on the upper part of the backwater side of the precast sheet piles 100, and covers the first steel bars 110 on each precast sheet pile 100 and the second steel bars 210 on the precast guide beam 200. The top surface of the sheet pile backwater side concrete structure 300 is flush with the top surface of the precast guide beam 200.

[0045] The construction method of the prefabricated assembled close-packed sheet pile revetment of this embodiment comprises the following steps:

[0046] Step S10, prepare a plurality of prefabricated sheet piles 100, and reserve a plurality of first steel bars 110 arranged at intervals at the top of the backwater side of each prefabricated sheet pile 100; prepare a prefabricated guide beam 200, and embed a plurality of second steel bars 210 at intervals along the length direction on the backwater side of the prefabricated guide beam 200.

[0047] Step S20, a plurality of prefabricated sheet piles 100 are placed side by side on the river bank, and a plurality of first steel bars 110 on each prefabricated sheet pile 100 are exposed above the ground. Fig.11 As shown;

[0048] Step S30, press the prefabricated guide beam 200 onto the top surface of a plurality of prefabricated sheet piles 100, such as Fig.12 As shown. Due to the limitation of construction technology during the construction of prefabricated sheet piles 100, there will be unevenness such as slight deviation in the elevation of the pile top and front-back deviation between the sheet piles. At this time, placing the prefabricated guide beam 200 on a number of prefabricated sheet piles 100 can cover the unevenness, thereby making the river bank uniform and the landscape effect better.

[0049] Step S40 , using conventional onshore construction technology to cast concrete on site on the upper part of the backwater side of the plurality of precast sheet piles 100 , to form a sheet pile backwater side concrete structure 300 that covers the plurality of first steel bars 110 on each precast sheet pile 100 and the plurality of second steel bars 210 on the precast guide beam 200 .

[0050] In step S40 , after additional reinforcements are tied between the plurality of second reinforcements 210 on the precast guide beam 200 and the plurality of first reinforcements 110 on each precast sheet pile 100 , concrete is poured on site. Example

[0051] The prefabricated assembled close-packed sheet pile revetment (with a walkway) in this embodiment is substantially the same as the prefabricated assembled close-packed sheet pile revetment (without a walkway) in Example 1, the difference being that: Fig.13 and Fig.14 The prefabricated assembled close-packed sheet pile revetment of this embodiment further includes a pedestrian walkway structure 400, which is constructed on the backwater side of the sheet pile backwater side concrete structure 300, and the top surface of the pedestrian walkway structure 400 is flush with the top surface of the sheet pile backwater side concrete structure 300. Furthermore, a resting step 310 is formed on the backwater side of the sheet pile backwater side concrete structure 300, and the water-facing side edge 410 of the pedestrian walkway structure 400 is rested on the resting step 310 of the sheet pile backwater side concrete structure 300, thereby reducing the amount of foundation treatment engineering.

[0052] The construction method of the prefabricated assembled close-packed sheet pile revetment in this embodiment is substantially the same as the construction method in Embodiment 1, except that the construction method in this embodiment further includes step S50 of constructing a pedestrian walkway structure 400 on the backwater side of the sheet pile backwater side concrete structure 300.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A prefabricated and assembled close-packed sheet pile revetment, characterized in that: include: A plurality of prefabricated sheet piles are arranged side by side on the river bank, and a plurality of first steel bars arranged at intervals are embedded at the top of the backwater side of each prefabricated sheet pile; A prefabricated guide beam is pressed on the top surface of the plurality of prefabricated sheet piles, and a plurality of second steel bars are pre-embedded at intervals along the length direction on the water-receiving side of the prefabricated guide beam; and A sheet pile backwater side concrete structure is cast on the upper part of the backwater side of the plurality of precast sheet piles and covers the plurality of first steel bars on each precast sheet pile and the plurality of second steel bars on the precast guide beam; It also includes a pedestrian walkway structure constructed on the backwater side of the sheet pile backwater side concrete structure, wherein the top surface of the pedestrian walkway structure is flush with the top surface of the sheet pile backwater side concrete structure; A resting step is formed on the backwater side of the sheet pile backwater side concrete structure, and the water-facing side edge of the pedestrian walkway structure is placed on the resting step of the backwater side concrete structure of the sheet pile; The construction method of the prefabricated and assembled close-packed sheet pile revetment comprises the following steps: Step S10, preparing a plurality of prefabricated sheet piles, and pre-reserving a plurality of first steel bars arranged at intervals at the top of the backwater side of each prefabricated sheet pile; preparing a prefabricated guide beam, and pre-embedding a plurality of second steel bars at intervals along the length direction on the backwater side of the prefabricated guide beam; Step S20, driving the plurality of prefabricated sheet piles side by side at the river bank, with the plurality of first steel bars on each prefabricated sheet pile exposed above the ground; Step S30, pressing the prefabricated guide beam onto the top surface of the plurality of prefabricated sheet piles; Step S40, using conventional onshore construction technology to cast concrete on site on the upper part of the backwater side of the plurality of precast sheet piles, to form a sheet pile backwater side concrete structure that covers the plurality of first steel bars on each precast sheet pile and the plurality of second steel bars on the precast guide beam; after additional steel bars are tied between the plurality of second steel bars on the precast guide beam and the plurality of first steel bars on each precast sheet pile, the concrete is cast on site.

2. The prefabricated and assembled close-packed sheet pile revetment according to claim 1 is characterized in that: A protrusion extending in the height direction is formed on one side surface along the length direction of each prefabricated sheet pile, and a groove extending in the height direction is formed on the other side surface along the length direction; when two adjacent prefabricated sheet piles are matched, the protrusion of one prefabricated sheet pile is inserted into the groove of the other prefabricated sheet pile.

3. The prefabricated and assembled close-packed sheet pile revetment according to claim 1 is characterized in that: The lower end of each prefabricated sheet pile is in a pointed cone structure.

4. The prefabricated and assembled close-packed sheet pile revetment according to claim 1 is characterized in that: The cross section of the prefabricated guide beam is rectangular, and its length is 10m to 15m.

5. The prefabricated and assembled close-packed sheet pile revetment according to claim 1, characterized in that: The top surface of the sheet pile backwater side concrete structure is flush with the top surface of the prefabricated guide beam.

6. The prefabricated and assembled close-packed sheet pile revetment according to claim 1, characterized in that: The step S50 is also included, in which a pedestrian walkway structure is constructed at the backwater side of the sheet pile backwater side concrete structure.

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